51081507527 has 2 divisors, whose sum is σ = 51081507528. Its totient is φ = 51081507526.

The previous prime is 51081507473. The next prime is 51081507551. The reversal of 51081507527 is 72570518015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51081507527 - 2²⁶ = 51014398663 is a prime.

It is a super-2 number, since 2×51081507527² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51081507427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25540753763 + 25540753764.

It is an arithmetic number, because the mean of its divisors is an integer number (25540753764).

Almost surely, 2^51081507527 is an apocalyptic number.

51081507527 is a deficient number, since it is larger than the sum of its proper divisors (1).

51081507527 is an equidigital number, since it uses as much as digits as its factorization.

51081507527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98000, while the sum is 41.

The spelling of 51081507527 in words is "fifty-one billion, eighty-one million, five hundred seven thousand, five hundred twenty-seven".